vorpX already provides out-of-the-box automatic FOV setup for Half-Life 2 via the DirectVR memory scanner and more than that. You can actually play the game in (almost)roomscale VR. There isn’t anything useful this update could add.
would there be potential performance boost using a custom aspect ratio closer to match the displays of the HMD? Right now in the main branch of the game you can only select 16:9 and 4:3 aspect ratios iirc. it was my understanding that this update will allow for any aspect ratio.
Not really. Performance wise the difference between 4:3 and narrower custom resolutions typically isn’t that huge. Besides: the game should run at 90fps with decent resolutions anyway. Give it a go, one of the best vorpX first person shooter experiences you can have. Max. DirectVR with all bells and whistles for an almost roomscale experience, even auto weapon hide. Like said above, there isn’t really anything this patch could improve.